Springboot集成quartz之让项目飞起来（第一期）

Springboot集成quartz之让项目飞起来（第一期）

开发工具：

IDEA 2017.1.5

Maven项目管理

1. 新建springboot模块

模块名称：

cnlm-springboot-quartz

2. 重命名springboot启动类为Application

@SpringBootApplication
public class Application {

public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

3. 运行：果然预料之中，运行不起来，报错，异常信息：

2017-07-15 21:31:38.178  WARN 5320 --- [           main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Tomcat.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.tomcat.jdbc.pool.DataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).
2017-07-15 21:31:38.182  INFO 5320 --- [           main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
Disconnected from the target VM, address: '127.0.0.1:43215', transport: 'socket'
2017-07-15 21:31:38.187 ERROR 5320 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   :

***************************
APPLICATION FAILED TO START
***************************

Description:

Cannot determine embedded database driver class for database type NONE

Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

Process finished with exit code 1

初步判断是由于没有设置数据源导致，

resources/application.properties文件加入数据库连接配置：

## master 数据源配置
master.datasource.url=jdbc:mysql://localhost:3306/cnlm-blog?useUnicode=true&characterEncoding=utf8
master.datasource.username=root
master.datasource.password=123456
master.datasource.driverClassName=com.mysql.cj.jdbc.Driver
server.port=22222
# 配置mapper的扫描，找到所有的mapper.xml映射文件
mybatis.mapperLocations=classpath:mapper/**/*.xml
# 加载全局的配置文件
mybatis.configLocation=classpath:mybatis-config.xml

pom.xml文件中加入mysql数据库java版驱动依赖

<!-- MySql数据库驱动 版本号6.0.6 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
</dependency>

pom.xml文件中加入阿里巴巴开源数据库框架druid的依赖

<!-- druid阿里巴巴数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>

至此，创建一个类用于初始化数据库连接

package me.cnlm.springboot.quartz.datasource;

import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

/**
* @author zhuxl@paxsz.com
* @time 2017/5/4
*/
@Configuration
// 扫描 Mapper 接口并容器管理
@MapperScan(basePackages = {MasterDataSourceConfig.PACKAGE_DAO}, sqlSessionFactoryRef = "masterSqlSessionFactory")

public class MasterDataSourceConfig {

static final String PACKAGE_DAO = "me.cnlm.springboot.quartz.dao";

@Value("${mybatis.mapperLocations}")
private String mapperLocation;

@Value("${mybatis.configLocation}")
private String configLocation;

@Value("${master.datasource.url}")
private String url;

@Value("${master.datasource.username}")
private String user;

@Value("${master.datasource.password}")
private String password;

@Value("${master.datasource.driverClassName}")
private String driverClass;

@Bean(name = "masterDataSource")
@Primary
public DataSource masterDataSource() {
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName(driverClass);
dataSource.setUrl(url);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}

@Bean(name = "masterTransactionManager")
@Primary
public DataSourceTransactionManager masterTransactionManager() {
return new DataSourceTransactionManager(masterDataSource());
}

@Bean(name = "masterSqlSessionFactory")
@Primary
public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource masterDataSource)
throws Exception {
final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
sessionFactory.setDataSource(masterDataSource);
sessionFactory.setConfigLocation(new DefaultResourceLoader().getResource(configLocation));
sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver()
.getResources(mapperLocation));

return sessionFactory.getObject();
}
}

4. 再次运行，还是惊吓！！！

这次异常：

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method 'masterSqlSessionFactory' threw exception; nested exception is java.io.FileNotFoundException: class path resource [mapper/] cannot be resolved to URL because it does not exist
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.9.RELEASE.jar:4.3.9.RELEASE]
... 17 common frames omitted
Caused by: java.io.FileNotFoundException: class path resource [mapper/] cannot be resolved to URL because it does not exist

….

….

….

期间还需要添加相关依赖，最后在运行的时候已经习惯了，还是异常：

Unregistering JMX-exposed beans on shutdown

网上一搜，答案一大堆，原来是没有引入嵌入式tomcat，springboot默认的嵌入容器是tomcat，也可以自定义使用jetty，网上很多答案是加的：

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>

但我加的是下面这个，它包括了上面的tomcat依赖

<!-- Spring Boot Web 依赖 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

5. 再次启动，这次终于成功运行起来了。另外需要说明的是，上述我引入了mybatis的额外配置文件以及mybatis写sql的xml扫描路径，所以需要添加

resources/mybatis

resources/mybatis-config.xml

本期已结束，至此项目已经可以飞起来了，下期：

- Springboot集成quartz之定时打印Hello World（第二期）

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